Powerfully fast: the ML2851ND charges out of the gate with ultra-fast first-print-out and high page-per-minute speeds. Network-ready for quick, convenient sharing. Expandable memory increases performance and allows smoother running, more efficient networking. Built-in automatic duplexing lets you print on both sides of a sheet of paper, saving time and money. TonerSaveâ„¢ functionality extends toner life by up to 40%, reducing the need for costly toner. High monthly duty cycle makes this a great small office workhorse. Powerful 400 megahertz processor handles large, complex documents with ease. Energy StarÂ® compliance helps you save the environment while saving money on energy costs. Compact, stylish design looks good without taking up lots of space.